Home / 158,389.85-218,583.44-86,769.86

Finding the Fourth Proportional to 158,389.85, 218,583.44 and 86,769.86

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Solution

The fourth proportional to 158,389.85, 218,583.44 and 86,769.86 is: 119,745.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,389.85 : 218,583.44 = 86,769.86 : x
  2. Step 2: Convert to fraction form
    158,389.85/218,583.44 = 86,769.86/x
  3. Step 3: Cross multiply
    158,389.85x = 218,583.44 × 86,769.86
  4. Step 4: Simplify right side
    158,389.85x = 18,966,452,960.35
  5. Step 5: Solve for x
    x = 18,966,452,960.35/158,389.85
  6. Step 6: Final answer
    x = 119,745.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.